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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

EWA B BAK M.D.
NPI 1336185339
Internal Medicine in Beachwood, OH

Active since June 20, 2006Opted out of Medicare · through Jul 23, 2028
29525 CHAGRIN BLVD STE 120, BEACHWOOD, OH 44122(440) 652-8250(440) 560-8531 Get Directions Write a Review

NPPES record last updated: October 2, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 2, 2026, Dec 16, 2020 (2 updates tracked since 2020).

About Ewa B Bak M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

EWA B BAK M.D. (NPI 1336185339) is an individual internal medicine provider in Beachwood, Ohio, licensed in Ohio (35.120478) and active in the NPI registry since June 2006. She has opted out of Medicare through July 23, 2028 and remains eligible to order and refer, is affiliated with Lake Health, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1336185339
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameEWA B BAKCredential: M.D.
Location Address29525 CHAGRIN BLVD STE 120Beachwood, OH 44122-4601
Mailing Address29525 Chagrin Blvd Ste 120Beachwood, OH 44122-4601 · (440) 652-8250 · Fax (440) 560-8531
Phone(440) 652-8250
Fax(440) 560-8531
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateJune 20, 2006
Last NPPES UpdateOctober 2, 20262 updates tracked since enumeration
NPPES CertifiedOctober 2, 2026
✔ NPI 1336185339 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OH · 35.120478
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
29525 CHAGRIN BLVD STE 120, Beachwood, OH 44122
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Other Names 1

Other Name (5)Ewa Bak Lewis

Secondary Practice Locations 2

Location 11401 Harrodsburg Rd, Suite B-160Lexington, KY 40504-3751 · Phone (859) 276-4486 · Fax (859) 277-9164
Location 21611 S Green Rd Ste 260Cleveland, OH 44121-4192 · Phone (216) 297-2059

Other Identifiers 6

Other022092900KY · Black Lung Insurance
Other110231108KY · Railroad Medicare
Other7140400KY · Aetna Insurance Company
Medicaid64046006KY
Other000000216081KY · Blue Cross & Blue Shield
Other1283881KY · United Mine Workers Assoc

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health Plan of Ohio, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Ewa B Bak M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from July 23, 2026 through July 23, 2028.

Opt-Out Effective DateJuly 23, 2026
Opt-Out In Effect ThroughJuly 23, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
430 services250 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
196 services196 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
153 services151 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
64 services62 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
64 services62 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
33 services30 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Lake Health

Acute Care Hospitals · Concord, OH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360098
Location7590 Auburn RoadConcord, OH 44077 · Lake County
Emergency services

Uh Cleveland Medical Center

Acute Care Hospitals · Cleveland, OH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360137
Location11100 Euclid AvenueCleveland, OH 44106 · Cuyahoga County
Emergency services Birthing friendly

Cleveland Clinic

Acute Care Hospitals · Cleveland, OH
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360180
Location9500 Euclid AvenueCleveland, OH 44195 · Cuyahoga County
Emergency services Birthing friendly

University Hospitals Ahuja Medical Center

Acute Care Hospitals · Beachwood, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360359
Location3999 Richmond RoadBeachwood, OH 44122 · Cuyahoga County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 44122 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers11 claims21 services$4.55 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ewa Bak's NPI number?

The NPI number for Ewa Bak is 1336185339. It was assigned to this individual provider in the NPPES registry on June 20, 2006. The provider is also known as Ewa Bak Lewis.

Where is Ewa Bak located?

Ewa Bak practices at 29525 Chagrin Blvd Ste 120, Beachwood, OH 44122. The listed phone number is (440) 652-8250.

What is Ewa Bak's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ewa Bak enrolled in Medicare?

No. Ewa Bak has opted out of Medicare through July 23, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

What insurance does Ewa Bak accept?

Health plans from Antidote Health Plan of Ohio, Inc. list Ewa Bak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Ewa Bak affiliated with any hospitals?

According to CMS data, Ewa Bak is affiliated with Lake Health, Uh Cleveland Medical Center, Cleveland Clinic and University Hospitals Ahuja Medical Center.

When was this NPI record last updated?

The NPPES record for Ewa Bak was last updated on October 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.